Roll-roll shipping equipment and roll-roll shipping method

Abstract

The invention discloses roll-roll shipping equipment and a roll-roll shipping method, and relates to the technical field of steel beam shipping, the roll-roll shipping equipment comprises two rows of beam transporting trolleys, two rails and two traction systems, the two rows of beam transporting trolleys are movably mounted on the rails respectively, the rails are positioned and mounted on a wharf and a transport ship respectively, and the traction systems are connected with the two rows of beam transporting trolleys. The two traction systems are positioned and mounted on the inner side of the transport ship, and the moving ends of the traction systems are connected with the beam transporting trolley; during use, the rails on the wharf are aligned with the rails on the transport ship one by one, the steel beams are positioned and placed at the top of the beam transporting trolley, the traction system is started and drives the beam transporting trolley and the steel beams above to synchronously and horizontally move along the rails, and roll-roll shipping operation of the steel beams is completed. The method is ingenious in conception, reasonable in layout, stable and reliable in positioning and safer and more efficient in construction process, meets the requirement for rapid roll-roll shipping of the steel beams through longitudinal movement of the steel beams, and is suitable for roll-roll shipping operation of large-tonnage steel beams.

Description

Technical Field

[0001] The present invention relates to the technical field of steel beam ship loading, and particularly relates to a roll-on / roll-off ship loading device and method. Background Art

[0002] Currently, the installation of steel box girders of cable-stayed bridges generally includes the following steps: fabricating the hoisting segments of the steel box girder bridge, and then transporting them by water to the construction site for hoisting. The self-weight of each steel box girder hoisting segment is 200 - 400t. When loading onto a ship, heavy equipment such as large road cranes or floating crane ships is usually used. During the hoisting operation, a crane with a very large lifting capacity or multiple cranes are required to lift simultaneously to complete the segment loading onto the ship. The required shipping yard is large, the terrain requirements are high, and the risk of multiple cranes working together is high.

[0003] With the increasing weight of steel beam transportation in China, the requirements for steel beam transfer are getting higher and higher. How to develop a roll-on / roll-off ship loading device and method to achieve the function of longitudinal rolling of large steel beams onto a ship has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] The purpose of the present invention is to provide a roll-on / roll-off ship loading device to solve the problems of high terrain requirements and high risk of multiple cranes working together in the prior art when using hoisting for ship loading.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A roll-on / roll-off ship loading device of the present invention includes two rows of beam transporting trolleys, two tracks, and two sets of traction systems. The two rows of beam transporting trolleys are respectively movably installed on the tracks, the tracks are respectively positioned and installed on the dock and the transport ship, the two sets of traction systems are positioned and installed inside the transport ship, and the moving ends of the traction systems are connected to the beam transporting trolleys.

[0007] Preferably, at least two groups of beam transporting trolleys are provided and distributed directly below a steel beam. Each group of beam transporting trolleys includes multiple longitudinal moving trolleys. A support and positioning assembly is provided on the top of the longitudinal moving trolleys. A tail stop for steel beam positioning is provided at the rear end of the longitudinal moving trolley at the tail, and an adapter plate for connecting to the traction system is provided on the longitudinal moving trolley at the front; any two adjacent groups of beam transporting trolleys are connected together by a connecting rod and a bolt assembly.

[0008] Preferably, the support and positioning assembly includes a steel cushion beam and a wooden block. The steel cushion beam is directly provided on the top plate of the longitudinal moving trolley, the wooden block is placed on the top plate of the steel cushion beam, and a buffer layer is provided on the top surface of the wooden block.

[0009] Preferably, the buffer layer is configured as a single-layer flexible board or a multi-layer composite board, and the flexible board is a polyurethane board or a rubber board; the composite board includes a protective layer and a flexible board, and the protective layer is connected between the flexible board and the pads.

[0010] Preferably, the steel cushion beam is formed by welding steel plates, and has a cross-section of a U-shaped or a S-shaped cross-section. A plurality of reinforcing connecting plates are welded between the two sides of the steel cushion beam and the top plate of the longitudinal movement trolley.

[0011] Preferably, the traction system includes a movable pulley, a fixed pulley, a steering pulley and a winch for providing power, the fixed pulley is connected to the fixed lifting eye through a shackle and an independent steel wire rope, the fixed lifting eye and the winch are both fixedly connected to the transport ship, the steering pulley is arranged between the fixed lifting eye and the winch, the movable pulley is connected to the longitudinal movement trolley at the front end through a separate steel wire rope and a group of shackles; the steel wire rope on the winch is passed around the steering pulley, the movable pulley and the rear end of the fixed pulley in turn and is fixed in the positioning hole of the movable pulley.

[0012] Preferably, the movable pulley, the fixed pulley, the deflection pulley and the winch are each provided with two and are symmetrically distributed on the transport ship.

[0013] Preferably, the track includes a fixed track and a movable track, the two fixed tracks are positioned and installed on the dock or transport ship through a bolt assembly or a pressure plate assembly, and the two fixed tracks are butt-jointed together through the movable track.

[0014] A roll-on / roll-off method for transferring a steel beam to a transport ship using the roll-on / roll-off equipment as described above comprises the following steps:

[0015] Step 1: Loading of steel beams: The beam transporter moves directly under the steel beams and transfers the steel beams on the frame to the beam transporter by installing the beam bottom support;

[0016] Step 2, track alignment: adjust the position of the transport ship and align it with the fixed track on the dock, then install the movable track so that the two fixed tracks are docked together;

[0017] Step 3, traction transfer: First, the traction system is connected to the beam transport trolley, and the movable pulley is connected to the adapter plate on the front longitudinal transfer trolley through a separate wire rope and a set of shackles; at the same time, the wire rope on the winch is passed through the steering pulley, the movable pulley and the fixed pulley in turn, and the free end is fixed in the positioning hole of the movable pulley;

[0018] Finally, the winch is started, the wire rope is wound up and drives the beam transport trolley and the steel beam above to move horizontally along the track toward the transport ship until all the steel beams are transferred to the fixed track of the transport ship and stop.

[0019] Preferably, the height of the fixed track of the transport ship is adjusted by the intake and drainage in the ship's own cabin.

[0020] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0021] A roll-on / roll-off ship loading device of the present invention includes two rows of beam transport trolleys, two tracks and two sets of traction systems. The two rows of beam transport trolleys are respectively movably installed on the tracks. The tracks include fixed tracks and movable tracks. The two sets of fixed tracks are respectively positioned and installed on the wharf and the transport ship, and then docked through the movable track. The two sets of traction systems are positioned and installed inside the transport ship. The traction system includes a movable pulley, a fixed pulley, a steering pulley and a winch for providing power. The movable pulley is connected to the beam transport trolley. When in use, the tracks on the wharf and the tracks on the transport ship are aligned one by one. The steel beam is positioned and placed on the top of the beam transport trolley. The traction system is started and drives the beam transport trolley and the steel beam above to move horizontally along the track synchronously, completing the roll-on / roll-off ship loading operation of the steel beam.

[0022] 1) The track docking is convenient and fast. The ballast adjustment is realized through the structure of the transport ship itself, aligning and equalizing the heights of the two fixed tracks and one movable track.

[0023] 2) The beam transport trolley is composed of multiple longitudinal movement trolleys. There are good support and positioning components on the longitudinal movement trolleys, including steel cushion beams and wooden pads. A buffer layer is provided on the top surface of the wooden pads. The support and positioning components protect the top plate of the longitudinal movement trolley. At the same time, the top buffer layer realizes soft contact positioning with the bottom of the steel beam, providing support force while avoiding damaging its surface and increasing the friction between them, making the positioning more stable, effectively preventing slippage during the movement process, and making the longitudinal movement operation safer and more reliable.

[0024] 3) The design of the double traction system makes the overall force of the equipment stable and the operation smoother. At the same time, the transfer weight is increased, and it can be applied to the transfer operation of large-tonnage steel beams over 1000 tons.

[0025] The present invention is ingeniously conceived, reasonably laid out, with stable and reliable positioning, safer and more efficient construction process. Through the longitudinal movement of the steel beam, the rapid roll-on / roll-off ship loading of the steel beam is satisfied, which is applicable to the roll-on / roll-off of large-tonnage steel beams onto the ship. At the same time, it is also applicable to the ship loading requirements of other small-tonnage and large-volume steel beams or other framed items, realizing ground displacement and making the operation more convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the drawings.

[0027] Figure 1 It is the overall structural layout diagram of the roll-on / roll-off ship loading device of the present invention;

[0028] Figure 2 This is the front view of the beam transporting trolley of the present invention;

[0029] Figure 3 This is the enlarged view of the front-end structure of the beam transporting trolley of the present invention;

[0030] Figure 4 This is the enlarged view of the tail structure of the beam transporting trolley of the present invention;

[0031] Figure 5 This is the side view of the beam transporting trolley of the present invention;

[0032] Figure 6 This is the front view of the traction system of the present invention;

[0033] Figure 7 This is the top view of the traction system of the present invention;

[0034] Figure 8 This is the schematic diagram of the track layout structure of the present invention;

[0035] Figure 9 This is the schematic diagram of the track adjustment of the present invention;

[0036] Figure 10 This is the schematic diagram of the ro-ro ship loading process of the present invention;

[0037] Figure 11 This is the side view of the state where the steel beam is completely transported to the transport ship of the present invention.

[0038] Explanation of reference numerals: 1. Beam transporting trolley; 2. Traction system; 3. Track; 4. Steel beam;

[0039] 11. Longitudinal movement trolley; 12. Steel cushion beam; 13. Cushion wood; 14. Tail stop block; 15. Connecting rod; 16. Reinforcing connecting plate;

[0040] 21. Movable pulley; 22. Fixed pulley; 23. Shackle; 24. Steel wire rope; 25. Fixed lifting lug; 26. Steering pulley; 27. Winch;

[0041] 31. Fixed track; 32. Movable track. Detailed implementation manners

[0042] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0043] As Figures 1-9As shown in the figure, a roll-on / roll-off ship loading device includes two rows of beam-transporting trolleys 1, two tracks 3, and two sets of traction systems 2. The two rows of beam-transporting trolleys 1 are respectively movably installed on the tracks 3, and the tracks 3 are respectively positioned and installed on the wharf and the transport ship. The two sets of traction systems 2 are positioned and installed inside the transport ship, and the moving ends of the traction systems 2 are connected to the beam-transporting trolleys 1.

[0044] Specifically, at least two groups of the beam-transporting trolleys 1 are provided and distributed directly below a steel beam 4. Each group of the beam-transporting trolleys 1 includes multiple longitudinal movement trolleys 11. A support and positioning assembly is provided on the top of the longitudinal movement trolleys 11. A tail stop 14 for steel beam 4 positioning is provided at the rear end of the longitudinal movement trolley 11 located at the tail. The tail stop 14 is welded or connected by bolts to the top surface of the last longitudinal movement trolley 11. A transfer plate for connecting with the traction system 2 is provided on the longitudinal movement trolley 11 located at the front end; Any two adjacent groups of the beam-transporting trolleys 1 are connected together by a connecting rod 15 and a bolt assembly.

[0045] In one specific embodiment, the support and positioning assembly includes a steel cushion beam 12 and a cushion wood 13. The steel cushion beam 12 is directly provided on the top plate of the longitudinal movement trolley 11, and the cushion wood 13 is placed on the top plate of the steel cushion beam 12. A buffer layer is provided on the top surface of the cushion wood 13.

[0046] Specifically, the buffer layer is provided as a single-layer flexible plate or a multi-layer composite plate. The flexible plate is made of a polyurethane plate or a rubber plate; The composite plate includes a protective layer and a flexible plate, and the protective layer is connected between the flexible plate and the cushion wood 13. Specifically, the flexible plate can be made of a polyurethane plate or a rubber plate, and the protective layer is made of a triangular wedge-shaped wooden block or other suitable materials.

[0047] Specifically, the support and positioning assembly forms a protection for the top plate of the longitudinal movement trolley. At the same time, the top buffer layer realizes soft contact positioning with the bottom of the steel beam, provides support force while avoiding damaging its surface, and increases the friction between each other, making the positioning more stable, effectively preventing slippage during the movement process, and making the longitudinal movement operation safer and more reliable.

[0048] As Figure 5 shown, specifically, the steel cushion beam 12 is welded by steel plates, and the cross-section is a square shape or a Japanese character shape. Multiple reinforcing connecting plates 16 are welded between the two sides of the steel cushion beam 12 and the top plate of the longitudinal movement trolley 11. The design of the reinforcing connecting plates 16 effectively improves the connection strength between the steel cushion beam 12 and the longitudinal movement trolley 11.

[0049] As Figures 6-7As shown, the traction system 2 includes a movable pulley 21, a fixed pulley 22, a steering pulley 26 and a winch 27 for providing power. The fixed pulley 22 is connected to the fixed lifting lug 25 through a shackle 23 and an independent steel wire rope 24. The fixed lifting lug 25 and the winch 27 are both fixedly connected to the transport ship. The steering pulley 26 is arranged between the fixed lifting lug 25 and the winch 27. The movable pulley 21 is connected to the longitudinal movement trolley 11 at the front end through a separate steel wire rope 24 and a group of shackles 23; the steel wire rope on the winch 27 is passed around the steering pulley 26, the movable pulley 21 and the rear end of the fixed pulley 22 in turn and is fixed in the positioning hole of the movable pulley 21.

[0050] Specifically, two movable pulleys 21, fixed pulleys 22, diverting pulleys 26 and winches 27 are provided and symmetrically distributed on the transport ship. The design of the double traction system makes the overall force of the equipment stable and the operation more stable; at the same time, the transfer weight is increased, which can be applied to the transfer operation of large-tonnage steel beams of more than 1,000 tons.

[0051] like Figures 8-9 As shown, the track 3 includes a fixed track 31 and a movable track 32 . The two fixed tracks 31 are positioned and installed on the dock or transport ship through a bolt assembly or a pressure plate assembly, and the two fixed tracks 31 are connected together through the movable track 32 .

[0052] Specifically, Figure 5 As shown, the specific structure of the track 3 includes a connecting bottom plate and two parallel I-shaped tracks. The connecting bottom plate is mainly used to fix with the dock ground and the deck of the transport ship.

[0053] like Figures 10-11 As shown, a roll-on / roll-off method is used to transfer the steel beam to a transport ship using the roll-on / roll-off equipment as described above, comprising the following steps:

[0054] Step 1: Loading of steel beams: The beam transporter directly moves to the bottom of the steel beams, and transfers the steel beams on the frame to the beam transporter trolley 1 by installing the beam bottom support; this transfer method directly realizes the transfer on the ground, which is more convenient and quick;

[0055] Step 2: Track alignment: adjust the position of the transport ship and align it with the fixed track 31 on the dock, then install the movable track 32 so that the two fixed tracks 31 are docked together;

[0056] Step 3, traction and transfer: First, connect the traction system 2 to the girder carrier 1. Connect the movable pulley 21 to the adapter plate on the front-end longitudinal movement trolley 11 through a separate steel wire rope 24 and a set of shackles 23. At the same time, wind the steel wire rope on the winch 27 around the steering pulley 26, the movable pulley 21 and the fixed pulley 22 in sequence, and then fix the free end in the positioning hole of the movable pulley 21.

[0057] Finally, start the winch 27. The steel wire rope winds up and drives the girder carrier 1 and the steel beam 4 above it to move horizontally along the track 3 towards the transport ship until the steel beam 4 is completely transferred onto the fixed track 31 of the transport ship and stops.

[0058] Specifically, the height of the fixed track 31 of the transport ship is adjusted by the intake and drainage in the ship's own cabin. The docking of the fixed track and the movable track is convenient and fast. Ballast adjustment is achieved through the ship's own structure to align and level the two fixed tracks and one movable track.

[0059] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0060] The embodiments described above are only descriptions of the preferred modes of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A roll-on / roll-off ship loading equipment, characterized in that: The invention comprises two rows of beam transport trolleys (1), two tracks (3) and two sets of traction systems (2); the two rows of beam transport trolleys (1) are movably mounted on the tracks (3); the tracks (3) are respectively positioned and mounted on a dock and a transport ship; the two sets of traction systems (2) are positioned and mounted on the inner side of the transport ship; and the movable end of the traction system (2) is connected to the beam transport trolley (1).

2. The ro-ro ship loading equipment according to claim 1, characterized in that: At least two groups of the beam transport trolleys (1) are arranged and distributed directly below a steel beam (4). Each group of the beam transport trolleys (1) includes a plurality of longitudinal movement trolleys (11). A support positioning assembly is arranged on the top of the longitudinal movement trolley (11). A rear end block (14) for positioning the steel beam (4) is arranged at the rear end of the longitudinal movement trolley (11). A transfer plate for connecting to the traction system (2) is arranged on the front end of the longitudinal movement trolley (11). Any two adjacent groups of the beam transport trolleys (1) are connected together by a connecting rod (15) and a bolt assembly.

3. The ro-ro ship loading equipment according to claim 2, characterized in that: The supporting and positioning assembly comprises a steel cushion beam (12) and a cushion wood (13); the steel cushion beam (12) is directly arranged on the top plate of the longitudinal shifting trolley (11); the cushion wood (13) is placed on the top plate of the steel cushion beam (12); and a buffer layer is arranged on the top surface of the cushion wood (13).

4. The ro-ro ship loading equipment according to claim 3, characterized in that: The buffer layer is configured as a single-layer flexible board or a multi-layer composite board, and the flexible board is a polyurethane board or a rubber board; the composite board comprises a protective layer and a flexible board, and the protective layer is connected between the flexible board and the cushion (13).

5. The ro-ro ship loading equipment according to claim 3, characterized in that: The steel cushion beam (12) is formed by welding steel plates and has a cross-section of a square or a square. A plurality of reinforcing connecting plates (16) are welded between the two sides of the steel cushion beam (12) and the top plate of the longitudinal movement trolley (11).

6. The ro-ro ship loading equipment according to claim 2, characterized in that: The traction system (2) comprises a movable pulley (21), a fixed pulley (22), a deflection pulley (26) and a winch (27) for providing power. The fixed pulley (22) is connected to a fixed lifting lug (25) through a shackle (23) and an independent steel wire rope (24). The fixed lifting lug (25) and the winch (27) are both fixedly connected to the transport ship. The deflection pulley (26) is arranged between the fixed lifting lug (25) and the winch (27). The movable pulley (21) is connected to the longitudinal shifting trolley (11) at the front end through a independent steel wire rope (24) and a group of shackles (23). The steel wire rope on the winch (27) passes through the deflection pulley (26), the movable pulley (21) and the fixed pulley (22) in sequence, and the rear end is fixed in the positioning hole of the movable pulley (21).

7. The ro-ro ship loading equipment according to claim 6, characterized in that: The movable pulley (21), the fixed pulley (22), the deflection pulley (26) and the winch (27) are each provided with two and symmetrically distributed on the transport ship.

8. The ro-ro ship loading equipment according to claim 1, characterized in that: The track (3) comprises a fixed track (31) and a movable track (32); the two fixed tracks (31) are positioned and installed on the dock or transport ship via a bolt assembly or a pressure plate assembly; the two fixed tracks (31) are butt-jointed together via the movable track (32).

9. A roll-on / roll-off method, characterized in that: Using the roll-on / roll-off ship loading equipment according to any one of claims 1 to 8 to transfer the steel beam to a transport ship comprises the following steps: Step 1: Steel beam loading operation: The beam transport vehicle moves directly to the bottom of the steel beam and transfers the steel beam on the frame to the beam transport vehicle (1) by installing the beam bottom support; Step 2: Track alignment: adjust the position of the transport ship and align it with the fixed track (31) on the dock, then install the movable track (32) so that the two fixed tracks (31) are docked together; Step 3, traction transfer: First, the traction system (2) is connected to the beam transport trolley (1), and the movable pulley (21) is connected to the adapter plate on the front longitudinal transfer trolley (11) through a single steel wire rope (24) and a set of shackles (23); at the same time, the steel wire rope on the winch (27) is passed through the steering pulley (26), the movable pulley (21) and the fixed pulley (22) in sequence, and the free end is fixed in the positioning hole of the movable pulley (21); Finally, the winch (27) is started, the steel wire rope is wound up and drives the beam transport trolley (1) and the steel beam (4) above to move horizontally along the track (3) toward the transport ship until all the steel beams (4) are transferred to the fixed track (31) of the transport ship and stop.

10. The ro-ro method for loading a ship according to claim 9, characterized in that: The height of the fixed rail (31) of the transport ship is adjusted by water inflow and water outflow in the cabin of the transport ship itself.

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